Photosynthesis (ectomycorrhizal) of well-watered and fertilized seedlings grown for several weeks in controlled-environment facilities

40%

Fransson and Johansson (2010)

Photosynthesis (nonmycorrhizal) of well-watered and fertilized seedlings grown for several weeks in controlled-environment facilities

40%

Heath et al. (2005)

Well-watered seedlings grown for just over one year in vertical sections of 16-cm-diameter polyethylene tubes supplied with 10 liters of fertilized soil (FS) containing 2.5 g/liter of slow release Osmocote fertilizer, all located within several 4.5-m-diameter Solardomes

17%

Heath et al. (2005)

Well-watered seedlings grown for just over one year in vertical sections of 16-cm-diameter polyethylene tubes supplied with 10 liters of unfertilized soil, all located within several 4.5-m-diameter Solardomes

17%

Jach and Ceulemans (2000)

open-top chamber, 1-year old

47%

Jach and Ceulemans (2000)

open-top chamber, 2-year old

49%

Janssens et al. (2005)

Three-year-old seedlings planted in a sandy forest soil and grown for an additional three years within open-top chambers without any added nutrients or water

22%

Janssens et al. (2005)

Three-year-old seedlings planted in a sandy forest soil and grown for an additional four years within open-top chambers without any added nutrients or water

19%

Johansson et al. (2009)

Photosynthesis of seedlings grown in liquid culture for a period of six weeks with no ectomycorrhizal fungi associated with their roots

40%

Johansson et al. (2009)

Mean photosynthesis of seedlings grown in liquid culture for a period of six weeks infected with eight different mycorrhizae (ectomycorrhizal fungi associated with their roots)

Photosynthesis of one-year-old shoot sections of 30-year-old trees growing out-of-doors in closed-top chambers in Finland: seasonal mean of daily total net photosynthesis per unit projected needle area over three years

16%

Zhou et al. (2011)

Photosynthesis of eight-year-old saplings transplanted into open-top chambers and grown for an additional nine years at different atmospheric CO2 concentrations, with measurements of current-year needles of non-shaded top shoots being made on clear days between 0830 and 1130 hours in the last two years of the study

76%

Zhou et al. (2011)

Photosynthesis of eight-year-old saplings transplanted into open-top chambers and grown for an additional nine years at different atmospheric CO2 concentrations, with measurements of one-year-old needles of non-shaded top shoots being made on clear days between 0830 and 1130 hours in the last two years of the study